title: Extent of analyst bias in drug-assay results.
mesh_terms: D002851:Chromatography, High Pressure Liquid; D006801:Humans; D008012:Lidocaine / Q000097:blood; D004364:Pharmaceutical Preparations / Q000097:blood*; D011786:Quality Control; D013806:Theophylline / Q000097:blood; D014635:Valproic Acid / Q000097:blood
chemical_list: D004364:Pharmaceutical Preparations; D014635:Valproic Acid; D008012:Lidocaine; D013806:Theophylline